Toward justifying actions with logically and socially acceptable reasons

  • Authors:
  • Hiroyuki Kido;Katsumi Nitta

  • Affiliations:
  • Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Japan;Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Japan

  • Venue:
  • MICAI'11 Proceedings of the 10th Mexican international conference on Advances in Artificial Intelligence - Volume Part I
  • Year:
  • 2011

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Abstract

This paper formalizes argument-based reasoning for actions supported by believable reasons in terms of nonmonotonic consequences and desirable reasons in terms of Pareto optimality and maximizing social welfare functions. Our unified approach gives a four-layer practical argumentation framework structured with a propositional modal language with defaults and defeasible inference rules associated with practical reasoning. We show that the unified argument-based reasoning justifies an argument whose conclusion is supported by Pareto optimal, social welfare maximizing and nonmonotonic consequence reasons. Our formalization contributes to extend argument-based reasoning so that it can formally combine reasoning about logical believability and social desirability by benefiting from economic notions.